2026 Ram 4500 Drivetrain Parts: OEM & Replacement (47 Parts)

This page lists 47 drivetrain parts for the 2026 Ram 4500, across 19 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.

The drivetrain system on the 2026 Ram 4500 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Drive Shaft (8 parts), Differential Pinion Bearing / Race (6 parts) and Axle Shaft (5 parts). The other 16 part types cover the remaining 28 parts.

4WD Actuator

Brand	Part Number	Markets	Notes	Buy
AAM Fits: all 2026 4500 engines	40250500	🇺🇸 US 🇨🇦 CA		View on Amazon
MOPAR Fits: all 2026 4500 engines	68692481AA	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle4.44 Rear Axle Ratio Fitment notes — MOPAR 68692481AA Fits: 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleCrew Cab197.4" Wheelbas or: 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 1or 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 2or 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 3or 10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the actuators that engage four-wheel drive at the transfer case or axle. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same.

Axle / Differential Assembly

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68545894AA	🇺🇸 US 🇨🇦 CA	Fits Rear12.0" Banjo Rear Axle Fitment notes — MOPAR 68545894AA Fits: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleCrew Cab Wheelbase 4 or: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleCrew Cab197.4" Wheelbase or: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1 or: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2 or: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3 or: Rear12.0" Banjo Rear Axle4.44 Rear Axle RatioAnti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the Axle / Differential assemblies.

Axle Housing

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68462692AA	🇺🇸 US 🇨🇦 CA	Fits Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68462692AA Fits: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3 or: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4 or: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1 or: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2 or: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4 or: Rear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbase	View on Amazon

This table covers the Axle housings.

Axle Shaft

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68456986AB	🇺🇸 US 🇨🇦 CA	Fits RightFront Fitment notes — MOPAR 68456986AB Fits: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4 or: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbase or: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1 or: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2 or: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3 or: RightFront10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68456997AB	🇺🇸 US 🇨🇦 CA	Fits Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68456997AB Fits: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4 or: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbase or: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1 or: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2 or: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3 or: Front Left10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68651259AA	🇺🇸 US 🇨🇦 CA	Fits Front10.5" Front Axle Fitment notes — MOPAR 68651259AA Fits: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleCrew Cab Wheelbase 4 or: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleCrew Cab197.4" Wheelbase or: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 1 or: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 2 or: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 3 or: Front10.5" Front Axle4.44 Rear Axle RatioConventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68710759AA	🇺🇸 US 🇨🇦 CA	Fits Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68710759AA Fits: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4 or: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbase or: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1 or: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2 or: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3 or: Rear Left12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68710760AA	🇺🇸 US 🇨🇦 CA	Fits RightRear Fitment notes — MOPAR 68710760AA Fits: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4 or: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbase or: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1 or: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2 or: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3 or: RightRear12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the Axle shafts.

Axle Shaft Lock / Snap Ring

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68457001AA	🇺🇸 US 🇨🇦 CA	Fits Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68457001AA Fits: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbase or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the Axle Shaft Lock / Snap rings.

Differential Carrier

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68456981AA	🇺🇸 US 🇨🇦 CA	Fits Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68456981AA Fits: Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbas or: Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1or Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2or Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3or Differential Assembly, Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the carriers that hold the differential gears in the axle.

Differential Pinion Bearing / Race

Brand	Part Number	Markets	Notes	Buy
MOPAR Popular Fits: all 2026 4500 engines	5086688AA	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuter Fitment notes — MOPAR 5086688AA Fits: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterCrew Cab197.4" Wheelbas or: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterRegular Cab Chassis Wheelbase 1or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterRegular Cab Chassis Wheelbase 2or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterRegular Cab Chassis Wheelbase 3or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleOuterRegular Cab Chassis Wheelbase 4	View on Amazon
AAM Fits: all 2026 4500 engines	40195031	🇺🇸 US 🇨🇦 CA	Inside Diameter: 57.55 mm Fitment notes — AAM 40195031 Inside Diameter: 57.55 mm Rearpinion Head Bearingwith 12.0 (In) Rear Axle	View on Amazon
AAM Fits: all 2026 4500 engines	40265297	🇺🇸 US 🇨🇦 CA	Inside Diameter: 57.55 Fitment notes — AAM 40265297 Inside Diameter: 57.55 Rearpinion Head Bearingwith 12.0 (In) Rear Axle	View on Amazon
MOPAR Fits: all 2026 4500 engines	68454725AA	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInner Fitment notes — MOPAR 68454725AA Fits: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerCrew Cab197.4" Wheelbas or: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerRegular Cab Chassis Wheelbase 1or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerRegular Cab Chassis Wheelbase 2or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerRegular Cab Chassis Wheelbase 3or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleInnerRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68454736AA	🇺🇸 US 🇨🇦 CA	Fits 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInner Fitment notes — MOPAR 68454736AA Fits: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerCrew Cab197.4" Wheelbas or: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerRegular Cab Chassis Wheelbase 1or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerRegular Cab Chassis Wheelbase 2or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerRegular Cab Chassis Wheelbase 3or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleInnerRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68454737AA	🇺🇸 US 🇨🇦 CA	Fits 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuter Fitment notes — MOPAR 68454737AA Fits: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterCrew Cab197.4" Wheelbas or: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterRegular Cab Chassis Wheelbase 1or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterRegular Cab Chassis Wheelbase 2or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterRegular Cab Chassis Wheelbase 3or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleOuterRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the bearings and races on the differential pinion.

Differential Pinion Flange

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68456721AA	🇺🇸 US 🇨🇦 CA	HEMI HD EngineRegular Cab Chassis Wheelbase 4 Fitment notes — MOPAR 68456721AA HEMI HD EngineRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Auto Trans Fits: Cummins Engine.Regular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Cummins Engine.Regular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Cummins Engine.Crew Cab197.4" Wheelbase8-SPD ZF Powerline Automatic Trans or: Cummins Engine.Exc. MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Automatic Trans or: Cummins Engine.MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Automatic Trans	View on Amazon
MOPAR Fits: 6.4L V8	68533399AA	🇺🇸 US 🇨🇦 CA	Fits HEMI HD EngineSerrated flange yoke Fitment notes — MOPAR 68533399AA Fits: HEMI HD EngineSerrated flange yokeFront and RearCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: HEMI HD EngineSerrated flange yokeFront and RearCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: HEMI HD EngineSerrated flange yokeFront and RearRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Auto Trans or: HEMI HD EngineSerrated flange yokeFront and RearRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Auto Trans or: HEMI HD EngineSerrated flange yokeFront and RearRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Auto Trans or: RearHEMI HD EngineSerrated flange yokeCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: RearHEMI HD EngineSerrated flange yokeRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Auto Trans or: RearHEMI HD EngineSerrated flange yokeRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Auto Trans	View on Amazon
MOPAR Fits: all 2026 4500 engines	68533400AA	🇺🇸 US 🇨🇦 CA	Fits FrontHEMI HD Engine Fitment notes — MOPAR 68533400AA Fits: FrontHEMI HD EngineSerrated 70° For 3-pcCrew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: FrontHEMI HD EngineSerrated 70° For 3-pcRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Auto Trans or: FrontHEMI HD EngineSerrated 70° For 3-pcRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Auto Trans Fits: FrontCummins Engine.Serrated 70° For 3-pcCrew Cab197.4" Wheelbase8-SPD ZF Powerline Automatic Trans or: FrontCummins Engine.Serrated 70° For 3-pcRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Automatic Trans or: FrontCummins Engine.Serrated 70° For 3-pcRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Automatic Trans	View on Amazon

This table covers the flanges that connect the driveshaft to the differential pinion.

Differential Pinion Shim

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68454495AA	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68454495AA Fits: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbas or: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68454739AA	🇺🇸 US 🇨🇦 CA	Fits 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68454739AA Fits: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbas or: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the Differential Pinion shims.

Differential Ring and Pinion

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68455782AA	🇺🇸 US 🇨🇦 CA	Fits 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68455782AA Fits: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbas or: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68455786AC	🇺🇸 US 🇨🇦 CA	Fits 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68455786AC Fits: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbas or: 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3or 12.0" Banjo Rear Axle, 4.44 Rear Axle Ratio, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon
MOPAR Fits: all 2026 4500 engines	68644739AA	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68644739AA Fits: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbas or: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the ring-and-pinion gear sets that set the axle ratio.

Drive Shaft

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68312646AE	🇺🇸 US 🇨🇦 CA	Fits Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer Case Fitment notes — MOPAR 68312646AE Fits: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontExcept MAX Tow Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmis	View on Amazon
MOPAR Fits: all 2026 4500 engines	68368111AE	🇺🇸 US 🇨🇦 CA	Fits Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/Case Fitment notes — MOPAR 68368111AE Fits: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Drive Shaft, FrontMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.4L V8	68649100AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649100AA 2-Piece RearHEMI HD EngineDrive Shaft, RearRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.4L V8	68649103AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649103AA 2-Piece RearHEMI HD EngineDrive Shaft, RearRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.4L V8	68649105AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649105AA 2-Piece RearHEMI HD EngineDrive Shaft, RearCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68649096AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649096AA 2-Piece RearCummins Engine.Drive Shaft, RearMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68649097AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649097AA 2-Piece RearCummins Engine.Drive Shaft, RearMAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: 6.7L L6 DIESEL Turbocharged	68649098AA	🇺🇸 US 🇨🇦 CA	2-Piece Fitment notes — MOPAR 68649098AA 2-Piece RearCummins Engine.Drive Shaft, RearMAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission	View on Amazon

This table covers the driveshafts that carry torque from the transmission or transfer case.

Drive Shaft Seal

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68456977AA	🇺🇸 US 🇨🇦 CA	Axle Drive Shaft Seal Fitment notes — MOPAR 68456977AA Axle Drive Shaft Seal Fits: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbase or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3 or: Front10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the seals at the Drive Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Gear Oil

SAE 75W-140

Brand	Part Number	Markets	Notes	Buy
MOBIL Fits: all 2026 4500 engines	102490	🇺🇸 US 🇨🇦 CA	Synthetic Gear Lube Limited Slip 75W-14 0Mobil 1 Synthetic Gear Lubricant LS 75W-14 0 Fitment notes — MOBIL 102490 Synthetic Gear Lube Limited Slip 75W-14 0Mobil 1 Synthetic Gear Lubricant LS 75W-14 01 Quart Fits: Rear DifferentialBase ModelLimited Slip Rear Differential305 AAM with Dual Rear Wheels/ Single Rear Wheels or: Rear DifferentialBase ModelLimited Slip Rear Differential305 American Axle & Manufacturing with MTwith Dual Rear Wheels or: Rear DifferentialBase ModelLimited Slip Rear Differential305 American Axle Banjo	View on Amazon

SAE 75W-85

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68210057AB	🇺🇸 US 🇨🇦 CA	Fits 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front Axle Fitment notes — MOPAR 68210057AB Fits: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab Wheelbase 4or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleCrew Cab197.4" Wheelbas or: 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 1or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 2or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 3or 10.5" Front Axle, 4.44 Rear Axle Ratio, Conventional Differential Front AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.

Transfer Case Assembly

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68546818AA	🇺🇸 US 🇨🇦 CA	Fits BW 44-46Elec Shift-On-The-Fly Transfer Case Fitment notes — MOPAR 68546818AA Fits: BW 44-46Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission or: BW 44-46Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: BW 44-46Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: BW 44-46Elec Shift-On-The-Fly Transf	View on Amazon

This table covers the Transfer Case assemblies.

Transfer Case Control Module

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68674980AF	🇺🇸 US 🇨🇦 CA	Fits MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear Axle Fitment notes — MOPAR 68674980AF Fits: MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleCrew Cab Wheelbase 4or MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleCrew Cab197.4" Wheelbas or: MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 1or MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 2or MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 3or MAX Tow Elec Shift-On-The-Fly T/Case or Elec Shift-On-The-Fly Transfer Case, Anti-Spin Differential Rear AxleRegular Cab Chassis Wheelbase 4	View on Amazon

This table covers the Transfer Case control modules.

Transfer Case High / Low Clutch

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68206417AB	🇺🇸 US 🇨🇦 CA	Fits Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab Fitment notes — MOPAR 68206417AB Fits: Elec Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-SPD ZF Powerline Automatic Trans or: Elec Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-SPD ZF Powerline Automatic Trans	View on Amazon
MOPAR Fits: all 2026 4500 engines	68450063AA	🇺🇸 US 🇨🇦 CA	Fits MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab Fitment notes — MOPAR 68450063AA Fits: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Automatic Trans or: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-SPD ZF Powerline Automatic Trans or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Automatic Trans or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Automatic Trans or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Automatic Trans or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Automatic Trans	View on Amazon

This table covers the Transfer Case High / Low clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc.

Transfer Case Motor

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68450803AA	🇺🇸 US 🇨🇦 CA	Fits Electric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4 Fitment notes — MOPAR 68450803AA Fits: Electric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Electric Shift-On-The-Fly Transfer CaseCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: Electric Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: Electric Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-SPD ZF Pow	View on Amazon
MOPAR Fits: all 2026 4500 engines	68450191AA	🇺🇸 US 🇨🇦 CA	Fits MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab Fitment notes — MOPAR 68450191AA Fits: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon

This table covers the Transfer Case motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.

Transfer Case Sprocket

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: all 2026 4500 engines	68161362AA	🇺🇸 US 🇨🇦 CA	Fits Electronic Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4 Fitment notes — MOPAR 68161362AA Fits: Electronic Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: all 2026 4500 engines	68161363AA	🇺🇸 US 🇨🇦 CA	Fits Electronic Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4 Fitment notes — MOPAR 68161363AA Fits: Electronic Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseCrew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: Electronic Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: all 2026 4500 engines	68449235AA	🇺🇸 US 🇨🇦 CA	Fits MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab Fitment notes — MOPAR 68449235AA Fits: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon
MOPAR Fits: all 2026 4500 engines	68449236AA	🇺🇸 US 🇨🇦 CA	Fits MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab Fitment notes — MOPAR 68449236AA Fits: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Crew Cab197.4" Wheelbase8-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseCrew Cab Wheelbase 48-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 18-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 28-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 38-Speed ZF Powerline Automatic Transmission or: MAX Tow Elec Shift-On-The-Fly T/CaseRegular Cab Chassis Wheelbase 48-Speed ZF Powerline Automatic Transmission	View on Amazon

This table covers the Transfer Case sprockets.

Universal Joint

Brand	Part Number	Markets	Notes	Buy
MOPAR Fits: 6.4L V8	68451103AB	🇺🇸 US 🇨🇦 CA	Kit Fitment notes — MOPAR 68451103AB Kit Fits: HEMI HD EngineCrew Cab Crew Cab197.4" Wheelbase8-SPD ZF Powerline Auto Trans or: HEMI HD EngineCrew Cab Wheelbase 48-SPD ZF Powerline Auto Trans or: HEMI HD EngineRegular Cab Chassis Wheelbase 18-SPD ZF Powerline Auto Trans or: HEMI HD EngineRegular Cab Chassis Wheelbase 28-SPD ZF Powerline Auto Trans or: HEMI HD EngineRegular Cab Chassis Wheelbase 38-SPD ZF Powerline Auto Trans or: HEMI HD EngineRegular Cab Chassis Wheelbase 48-SPD ZF Powerline Auto Trans	View on Amazon

This table covers the U-joints in the driveshaft.

Buying Drivetrain Parts for a 2026 Ram 4500

On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.

Match the engine first. Some drivetrain parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
Read the notes on each row for position, trim and spec qualifiers before you order.
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Drive Shaft and Differential Pinion Bearing / Race .

Frequently Asked Questions

How many drivetrain parts fit the 2026 Ram 4500?

Our catalog currently lists 47 drivetrain parts for the 2026 Ram 4500 across 19 subcategories and 3 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.

Do drivetrain parts differ between 2026 Ram 4500 engines?

Some do. 39 parts fit every engine; the other 8 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of drivetrain problems on a 2026 Ram 4500?

Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2026 Ram 4500 was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2026 Ram 4500?

First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2026 Ram 4500

Belt Drive Body & Lamp Assembly Brake & Wheel Hub Cooling System Electrical Electrical Connector Electrical Switch & Relay Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Automatic Transmission Manual Transmission Wheel Wiper & Washer

Drivetrain Parts for Other Ram 4500 Years

2025 Ram 4500 2024 Ram 4500 2023 Ram 4500 2022 Ram 4500 2021 Ram 4500 2020 Ram 4500 2019 Ram 4500 2018 Ram 4500 2017 Ram 4500 2016 Ram 4500 2015 Ram 4500 2014 Ram 4500

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.

Published by AutoFactsDB from manufacturer application data. How fitment is matched Report a fitment error